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NFS: use in-kernel mount argument structure for nfsv[23] mounts
The user-visible nfs_mount_data does not contain sufficient data to describe new mount options, and also is now a legacy structure. Replace it with the internal nfs_parsed_mount_data for nfsv[23] in-kernel use. Signed-off-by: Tom Talpey <tmt@netapp.com> Acked-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
\"Talpey, Thomas\
Trond Myklebust
parent
6b18eaa082
commit
2283f8d6ed
3 changed files with 70 additions and 75 deletions
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@ -501,9 +501,9 @@ static int nfs_init_server_rpcclient(struct nfs_server *server, rpc_authflavor_t
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/*
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* Initialise an NFS2 or NFS3 client
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*/
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static int nfs_init_client(struct nfs_client *clp, const struct nfs_mount_data *data)
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static int nfs_init_client(struct nfs_client *clp,
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const struct nfs_parsed_mount_data *data)
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{
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int proto = (data->flags & NFS_MOUNT_TCP) ? IPPROTO_TCP : IPPROTO_UDP;
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int error;
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if (clp->cl_cons_state == NFS_CS_READY) {
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@ -522,8 +522,8 @@ static int nfs_init_client(struct nfs_client *clp, const struct nfs_mount_data *
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* Create a client RPC handle for doing FSSTAT with UNIX auth only
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* - RFC 2623, sec 2.3.2
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*/
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error = nfs_create_rpc_client(clp, proto, data->timeo, data->retrans,
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RPC_AUTH_UNIX, 0);
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error = nfs_create_rpc_client(clp, data->nfs_server.protocol,
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data->timeo, data->retrans, RPC_AUTH_UNIX, 0);
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if (error < 0)
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goto error;
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nfs_mark_client_ready(clp, NFS_CS_READY);
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@ -538,7 +538,8 @@ error:
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/*
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* Create a version 2 or 3 client
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*/
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static int nfs_init_server(struct nfs_server *server, const struct nfs_mount_data *data)
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static int nfs_init_server(struct nfs_server *server,
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const struct nfs_parsed_mount_data *data)
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{
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struct nfs_client *clp;
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int error, nfsvers = 2;
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@ -551,7 +552,8 @@ static int nfs_init_server(struct nfs_server *server, const struct nfs_mount_dat
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#endif
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/* Allocate or find a client reference we can use */
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clp = nfs_get_client(data->hostname, &data->addr, nfsvers);
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clp = nfs_get_client(data->nfs_server.hostname,
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&data->nfs_server.address, nfsvers);
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if (IS_ERR(clp)) {
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dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp));
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return PTR_ERR(clp);
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@ -581,7 +583,7 @@ static int nfs_init_server(struct nfs_server *server, const struct nfs_mount_dat
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if (error < 0)
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goto error;
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error = nfs_init_server_rpcclient(server, data->pseudoflavor);
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error = nfs_init_server_rpcclient(server, data->auth_flavors[0]);
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if (error < 0)
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goto error;
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@ -760,7 +762,7 @@ void nfs_free_server(struct nfs_server *server)
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* Create a version 2 or 3 volume record
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* - keyed on server and FSID
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*/
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struct nfs_server *nfs_create_server(const struct nfs_mount_data *data,
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struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
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struct nfs_fh *mntfh)
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{
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struct nfs_server *server;
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@ -5,7 +5,6 @@
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#include <linux/mount.h>
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struct nfs_string;
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struct nfs_mount_data;
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struct nfs4_mount_data;
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/* Maximum number of readahead requests
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@ -65,8 +64,9 @@ extern struct rpc_program nfs_program;
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extern void nfs_put_client(struct nfs_client *);
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extern struct nfs_client *nfs_find_client(const struct sockaddr_in *, int);
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extern struct nfs_server *nfs_create_server(const struct nfs_mount_data *,
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struct nfs_fh *);
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extern struct nfs_server *nfs_create_server(
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const struct nfs_parsed_mount_data *,
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struct nfs_fh *);
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extern struct nfs_server *nfs4_create_server(const struct nfs4_mount_data *,
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const char *,
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const struct sockaddr_in *,
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121
fs/nfs/super.c
121
fs/nfs/super.c
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@ -1041,15 +1041,31 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
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* XXX: as far as I can tell, changing the NFS program number is not
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* supported in the NFS client.
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*/
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static int nfs_validate_mount_data(struct nfs_mount_data **options,
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static int nfs_validate_mount_data(void *options,
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struct nfs_parsed_mount_data *args,
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struct nfs_fh *mntfh,
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const char *dev_name)
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{
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struct nfs_mount_data *data = *options;
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struct nfs_mount_data *data = (struct nfs_mount_data *)options;
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if (data == NULL)
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goto out_no_data;
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memset(args, 0, sizeof(*args));
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args->flags = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP);
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args->rsize = NFS_MAX_FILE_IO_SIZE;
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args->wsize = NFS_MAX_FILE_IO_SIZE;
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args->timeo = 600;
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args->retrans = 2;
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args->acregmin = 3;
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args->acregmax = 60;
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args->acdirmin = 30;
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args->acdirmax = 60;
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args->mount_server.protocol = IPPROTO_UDP;
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args->mount_server.program = NFS_MNT_PROGRAM;
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args->nfs_server.protocol = IPPROTO_TCP;
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args->nfs_server.program = NFS_PROGRAM;
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switch (data->version) {
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case 1:
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data->namlen = 0;
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@ -1078,90 +1094,67 @@ static int nfs_validate_mount_data(struct nfs_mount_data **options,
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if (mntfh->size < sizeof(mntfh->data))
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memset(mntfh->data + mntfh->size, 0,
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sizeof(mntfh->data) - mntfh->size);
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/*
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* Translate to nfs_parsed_mount_data, which nfs_fill_super
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* can deal with.
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*/
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args->flags = data->flags;
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args->rsize = data->rsize;
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args->wsize = data->wsize;
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args->flags = data->flags;
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args->timeo = data->timeo;
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args->retrans = data->retrans;
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args->acregmin = data->acregmin;
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args->acregmax = data->acregmax;
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args->acdirmin = data->acdirmin;
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args->acdirmax = data->acdirmax;
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args->nfs_server.address = data->addr;
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if (!(data->flags & NFS_MOUNT_TCP))
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args->nfs_server.protocol = IPPROTO_UDP;
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/* N.B. caller will free nfs_server.hostname in all cases */
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args->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL);
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args->namlen = data->namlen;
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args->bsize = data->bsize;
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args->auth_flavors[0] = data->pseudoflavor;
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break;
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default: {
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unsigned int len;
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char *c;
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int status;
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struct nfs_parsed_mount_data args = {
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.flags = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP),
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.rsize = NFS_MAX_FILE_IO_SIZE,
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.wsize = NFS_MAX_FILE_IO_SIZE,
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.timeo = 600,
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.retrans = 2,
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.acregmin = 3,
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.acregmax = 60,
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.acdirmin = 30,
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.acdirmax = 60,
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.mount_server.protocol = IPPROTO_UDP,
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.mount_server.program = NFS_MNT_PROGRAM,
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.nfs_server.protocol = IPPROTO_TCP,
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.nfs_server.program = NFS_PROGRAM,
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};
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if (nfs_parse_mount_options((char *) *options, &args) == 0)
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if (nfs_parse_mount_options((char *)options, args) == 0)
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return -EINVAL;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (data == NULL)
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return -ENOMEM;
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/*
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* NB: after this point, caller will free "data"
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* if we return an error
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*/
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*options = data;
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c = strchr(dev_name, ':');
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if (c == NULL)
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return -EINVAL;
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len = c - dev_name;
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if (len > sizeof(data->hostname))
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return -ENAMETOOLONG;
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strncpy(data->hostname, dev_name, len);
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args.nfs_server.hostname = data->hostname;
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/* N.B. caller will free nfs_server.hostname in all cases */
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args->nfs_server.hostname = kstrndup(dev_name, len, GFP_KERNEL);
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c++;
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if (strlen(c) > NFS_MAXPATHLEN)
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return -ENAMETOOLONG;
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args.nfs_server.export_path = c;
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args->nfs_server.export_path = c;
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status = nfs_try_mount(&args, mntfh);
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status = nfs_try_mount(args, mntfh);
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if (status)
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return status;
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/*
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* Translate to nfs_mount_data, which nfs_fill_super
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* can deal with.
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*/
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data->version = 6;
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data->flags = args.flags;
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data->rsize = args.rsize;
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data->wsize = args.wsize;
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data->timeo = args.timeo;
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data->retrans = args.retrans;
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data->acregmin = args.acregmin;
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data->acregmax = args.acregmax;
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data->acdirmin = args.acdirmin;
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data->acdirmax = args.acdirmax;
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data->addr = args.nfs_server.address;
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data->namlen = args.namlen;
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data->bsize = args.bsize;
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data->pseudoflavor = args.auth_flavors[0];
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break;
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}
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}
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if (!(data->flags & NFS_MOUNT_SECFLAVOUR))
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data->pseudoflavor = RPC_AUTH_UNIX;
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if (!(args->flags & NFS_MOUNT_SECFLAVOUR))
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args->auth_flavors[0] = RPC_AUTH_UNIX;
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#ifndef CONFIG_NFS_V3
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if (data->flags & NFS_MOUNT_VER3)
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if (args->flags & NFS_MOUNT_VER3)
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goto out_v3_not_compiled;
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#endif /* !CONFIG_NFS_V3 */
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if (!nfs_verify_server_address((struct sockaddr *) &data->addr))
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if (!nfs_verify_server_address((struct sockaddr *)
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&args->nfs_server.address))
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goto out_no_address;
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return 0;
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@ -1220,7 +1213,8 @@ static inline void nfs_initialise_sb(struct super_block *sb)
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/*
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* Finish setting up an NFS2/3 superblock
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*/
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static void nfs_fill_super(struct super_block *sb, struct nfs_mount_data *data)
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static void nfs_fill_super(struct super_block *sb,
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struct nfs_parsed_mount_data *data)
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{
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struct nfs_server *server = NFS_SB(sb);
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@ -1341,7 +1335,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
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struct nfs_server *server = NULL;
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struct super_block *s;
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struct nfs_fh mntfh;
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struct nfs_mount_data *data = raw_data;
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struct nfs_parsed_mount_data data;
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struct dentry *mntroot;
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int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
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struct nfs_sb_mountdata sb_mntdata = {
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@ -1350,12 +1344,12 @@ static int nfs_get_sb(struct file_system_type *fs_type,
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int error;
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/* Validate the mount data */
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error = nfs_validate_mount_data(&data, &mntfh, dev_name);
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error = nfs_validate_mount_data(raw_data, &data, &mntfh, dev_name);
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if (error < 0)
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goto out;
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/* Get a volume representation */
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server = nfs_create_server(data, &mntfh);
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server = nfs_create_server(&data, &mntfh);
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if (IS_ERR(server)) {
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error = PTR_ERR(server);
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goto out;
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@ -1379,7 +1373,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
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if (!s->s_root) {
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/* initial superblock/root creation */
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nfs_fill_super(s, data);
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nfs_fill_super(s, &data);
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}
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mntroot = nfs_get_root(s, &mntfh);
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@ -1394,8 +1388,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
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error = 0;
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out:
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if (data != raw_data)
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kfree(data);
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kfree(data.nfs_server.hostname);
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return error;
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out_err_nosb:
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